Improved soap product prom glttb residottm



iiilnitul fittin fittest dttilitt.

Letters Patent No. 99,979, dated February 15, 1870.

IBEPROVED SOAP FRODUCT PROM GLUE RESIDU'UM.

The Schedule referred to in these Letters Patent and making part of the same We, ANTHONY VAN HAAGEN and WILLIAM AD- AMSON, of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented a new Soap Product, of which the following is a specification.

Nata-re and Object of. the Invention.

Our invention consists of soap made by the treat ment substantially as described hereafter, of glue residuum, which has heretofore been considered of little or no value.

General Description.

In manufacturing glue, there remains in the kettles or boilers after the size has been drawn oil a residuum consisting of fatty matter, hair, bone, animal fibre, See, which is almost worthless, the attempts to use it as manure having met with very little success, owing partly to the matted and undistributable condition of the residuum itself, and partlyto the difficulty of disthe action of the alkali on the fat, and this soap risingin the vessel is removed and isat once available for cleaning or other purposes, or may be employed for conversion into merchantable soaps of different qualities. l

The residuum on cooling becomes a jelly-like mass, which owing to its saponaceous properties can be used for coarse cleaning purposes, but is more especially available as a valuable and rapidly-acting manure, eit-ner alone or mixed with charcoal or other equivalent absorbents possessing within themselves fertilizing properties.

We have found that about fifty pounds. of a solutionof caustic alkali of the strength of about 25 Baume will be required for treating about one hundred pounds of glue residuum of the ordinary quality, and that about twelve pounds of salt will be required to set free the soap derived from the fatty ingredients of the same quantity of glue residuum.

In giving these proportions it should be understood that they are not to be adhered to in all cases, for the proportions must be determined to some extent by the judgment of the attendant guided by his knowledge of the quality of the glue residuum to be treated.

I Claim.

Soap made from glue residuum by the treatment of the same, substantially in the manner described.

In testimony whereof, we have signed our names to this specification in the presence of two subscribing 

